Romans 11:17 expands Paul's root-and-branches metaphor by introducing the grafting of wild olive branches, directly illustrating the principle of the holy root.

Romans 16:5 calls Epaenetus the firstfruits of Achaia—the same term Paul uses here for Israel's patriarchs as holy firstfruit.

Genesis 17:7 establishes God's covenant with Abraham, the 'root' Paul refers to as holy, providing the covenantal basis for the branches' holiness.

1 Corinthians 7:14 applies the same 'holy lump' logic: a believing spouse sanctifies the unbelieving partner, mirroring Paul's principle of root sanctifying branches.

Numbers 15:17-21 specifies offering a cake from the first of the dough—the exact OT text Paul alludes to with 'firstfruits of dough'.

Numbers 15:20 establishes offering firstfruits from dough, sanctifying the whole batch—the principle Paul applies to Israel.

Deuteronomy 26:2 describes bringing firstfruits to the sanctuary, setting apart the harvest—mirroring Paul's logic that firstfruits make the whole holy.

Hosea 14:6 depicts Israel's branches spreading like an olive tree—the same olive tree imagery Paul uses for the root and branches.

Isaiah 6:13 speaks of a holy seed from a stump—a remnant root that remains, parallel to Paul's 'root is holy, so branches are holy'.

Isaiah 27:6 describes Israel taking root and putting forth shoots to fill the world—the same root/branches imagery Paul uses.

Jeremiah 2:3 calls Israel the firstfruits of God's increase—directly linking the firstfruits metaphor to Israel's holiness.

Revelation 14:4 describes the 144,000 as 'firstfruits' to God, a NT image of a holy remnant that echoes Paul's firstfruits metaphor in Romans.

James 1:18 calls believers 'firstfruits' of God's creation, offering a NT parallel to Paul's metaphor of firstfruits as a holy, representative portion.

Jeremiah 2:21 contrasts God's pure vine with a degenerate wild vine, paralleling Paul's contrast between natural and wild branches in Romans 11.

Exodus 22:29 commands offering the first of the harvest and firstborn, providing the OT background for the 'firstfruits' analogy Paul uses.

Ezekiel 44:30 assigns firstfruits to priests, reinforcing the OT notion that firstfruits are holy and set apart, which Paul applies metaphorically.

Nehemiah 10:35-37 details the OT practice of offering firstfruits, grounding Paul's metaphor of firstfruits sanctifying the whole batch in covenantal worship.

Deuteronomy 26:10 describes the declaratory aspect of bringing firstfruits before the Lord, adding the worship dimension to the concept Paul uses.

Deuteronomy 18:4 lists firstfruits of grain, wine, oil, and fleece given to the priest, providing broader OT context of firstfruits offerings.

Leviticus 23:10 commands the sheaf of firstfruits to the priest, illustrating the OT practice behind Paul's argument about the holy part.

Exodus 23:19 instructs to bring choice firstfruits to God's house, reinforcing the holiness of the first portion that Paul uses as an analogy.

Exodus 23:16 establishes the Feast of Harvest as firstfruits, showing the holy dedication that Paul applies to the remnant of Israel.

Proverbs 3:9 commands honoring God with firstfruits, a wisdom principle that underlies Paul's use of firstfruits as holy and representative.